发明名称 |
CURRENT PULSE RECEIVING CIRCUIT |
摘要 |
A current pulse receiving circuit suitable for converting a current pulse converted by a photodetector from a light pulse received in optical communications and outputting a logic level voltage pulse with an accurate pulse width is disclosed. When an output signal from a current-to-voltage converter circuit is detected to have a large amplitude by a large signal detection circuit, an amount of offset cancellation of a DC cancellation circuit is decreased to limit the amplitude of the output signal from the current-to-voltage converter circuit. Since the amplitude of an input signal of an amplifier circuit is limited, tail characteristics at a trailing edge of a pulse are small and an output is provided at an output terminal with an accurate pulse width.
|
申请公布号 |
US2002101270(A1) |
申请公布日期 |
2002.08.01 |
申请号 |
US20010922764 |
申请日期 |
2001.08.07 |
申请人 |
FUJITSU LIMITED |
发明人 |
NISHIZONO KAZUNORI;KUMANO TATSUO |
分类号 |
G01R31/28;H03F3/08;H03F3/45;H03K3/0233;H03K5/007;H03K5/08;H04B10/04;H04B10/06;H04B10/14;H04B10/158;H04B10/26;H04B10/28;(IPC1-7):H03K3/037 |
主分类号 |
G01R31/28 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|